A
PromiseWorker
is a
ChromeWorker
except instead of calling
postMessage()
to send a message, you call
post()
, which returns a
Promise
. JavaScript files imported into the worker scope and main thread scope which allows posting to the worker and receiving in the form of a
promise. Like
ChromeWorker
objects,
PromiseWorker
is mostly used for
js-ctypes but it is not limited to that. There is no
XPCOM access, similar to
ChromeWorker
. This answers the question "When should I use a
PromiseWorker
?", and the answer is, whenever you would normally use a
ChromeWorker
, but want
postMessage
to return promises.